gh-106603: Make uop struct a triple (opcode, oparg, operand) #106794
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gvanrossum
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Jul 15, 2023
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| inst(STORE_SUBSCR, (counter/1, v, container, sub -- )) { | ||
| inst(STORE_SUBSCR, (unused/1, v, container, sub -- )) { | ||
| #if ENABLE_SPECIALIZATION | ||
| if (ADAPTIVE_COUNTER_IS_ZERO(counter)) { | ||
| _PyStoreSubscrCache *cache = (_PyStoreSubscrCache *)next_instr; | ||
| if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) { |
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This change simply follows the vast majority of other unspecialized opcodes.
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@markshannon Can you review this? |
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Almost everything that used to go in operand now goes in oparg, except cache entries, which go into operand. This way a uop can have an oparg and a cache entry, which is much more convenient for splitting the more complex CALL specializations into uops. Most of the complexity (and debugging :-( ) went into optimizer.c.
As a side effect, without any extra work, we have four new viable uops:
The Python API (iterating over a uop executor) now returns triples (opname, oparg, operand).